five elements that can prove the genuineness of a user: what you know, what you have, what you are, what you do, and where you are. what are these called?

Authentication factor

Explanation: Authentication factor are the factors that describes about the ingenuity or originality of the user .This is the term that tells about the actuality of user that is getting connected with network by the five elemental question .

The question is regarding the possession, inherency, knowledge/information , identity and location.The answers to these question help in finding the authenticated user.

answer; i believe the correct answer is (a) all trenches must have access/egress;